BL Setup for Stock E-Maxx and Upgraded Parts Suggestions

I have a jiffy question about what seems to be the prefered setup, meaning the 9920 and a 7xl, this is the same setup that was suggested for my truck, my truck is definately heavier than stock (UE chassis, GA bulks, UE wide track suspension, UE SS) Monster Mike was the one who suggested this setup for my 11lb truck......what I'm wondering here is if this is the right setup for my truck (I'm betting it is, cause Mike sugggested it....) then would it be over kill for a stocker like the one in this thread.

To my way of thinking (I am by no means an expert, that's why I come to this fourm for help!) If that setup is good for my truck, it would be over kill for a stocker, or if it's the right setup for a stocker, it's going to be under powered for my truck.

thanks all!!